CN217393713U - Automobile rearview mirror pivot integrated into one piece mould - Google Patents

Abstract

The utility model discloses an automobile rearview mirror rotating shaft integrated forming die, which comprises a front film frame and a rear film frame, wherein the front film frame and the rear film frame are provided with a front film core and a rear mold core; the rear die core is provided with two die-casting areas, a die-casting cavity is arranged in the middle of each die-casting area, and a jack penetrating through the rear die core is arranged in the rear die core; each die-casting area is provided with a left top block and a right top block, and the left top block and the right top block are arranged in the jack; the left side and the right side of the rear die core are respectively provided with a sliding block, one end of each of the left ejector block and the right ejector block is fixed on the sliding block, and the other end of each of the left ejector block and the right ejector block extends into the die-casting cavity; the front mold core is provided with a first ejector rod, the rear mold core is provided with a second ejector rod, and the first ejector rod and the second ejector rod are mutually abutted. The utility model utilizes the slotted hole formed by splicing the left top block and the right top block to die-cast the conical structure of the automobile rearview mirror rotating shaft, thereby facilitating demoulding; the clearance between the second ejector rod and the through hole on the rear die core can contain redundant molten metal to form a hollow cylindrical waste bag, so that the material and trouble are saved.

Description

Automobile rearview mirror pivot integrated into one piece mould

Technical Field

The utility model relates to an automobile rearview mirror pivot processing technology field, in particular to automobile rearview mirror pivot integrated into one piece mould.

Background

The rotating shaft of the automobile rearview mirror is generally of a hollow cylindrical structure, a conical structure is arranged on the circumferential surface, and the diameter of the circumferential surface is reduced through the conical structure to form an installation part. When the existing automobile rearview mirror rotating shaft is machined, a primary product of the automobile rearview mirror rotating shaft needs to be firstly die-cast, the diameters of the upper part and the lower part of a cylinder on the primary product are consistent, the primary product needs to be machined, different diameter sections and a conical structure are machined by a milling machine, the whole machining period is prolonged, and the machining efficiency is low. Simultaneously, in order to guarantee the automobile rearview mirror pivot intensity that the die-casting was out, set up very big row of material package in the mould for hang very big a waste material on the primary product that the die-casting was out, need cut off behind unnecessary waste material before the milling machine processing, caused the very big waste of molten metal, greatly increased the processing cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an automobile rearview mirror pivot integrated into one piece mould that processing cycle is short, the waste material is few.

Therefore, the technical scheme of the utility model is that: the automobile rearview mirror rotating shaft integrated forming die comprises a front film frame and a rear film frame, wherein a front film core and a rear mold core which are matched with each other are arranged on the front film frame and the rear film frame; the rear die core is provided with two die-casting areas, a die-casting cavity is arranged in the middle of each die-casting area, an insertion hole penetrating through the rear die core is formed in the rear die core, and the insertion hole is communicated with the die-casting cavity; each die-casting area is provided with a left top block and a right top block, and the left top block and the right top block are arranged in the jack; the left side and the right side of the rear die core are respectively provided with a movable sliding block, one end of each of the left ejector block and the right ejector block is fixed on the corresponding sliding block, and the other end of each of the left ejector block and the right ejector block extends into the corresponding die-casting cavity; the front die core is provided with a first ejector rod, the rear die core is provided with a second ejector rod, the first ejector rod and the second ejector rod are coaxially arranged with the die-casting cavity, and the end parts of the first ejector rod and the second ejector rod are inserted into the die-casting cavity and mutually abutted.

The utility model discloses the whole cylindrical structure that is of automobile rearview mirror pivot of die-casting, the upper end is equipped with convex annular face, be equipped with a plurality of toper structures on the lower extreme cylinder, the lower extreme diameter differs, therefore, the annular face of automobile rearview mirror pivot is die-cast by the die cavity that front mould benevolence and back mould benevolence formed, all the other cylindrical structures are formed by the die-casting chamber of back mould benevolence, in order to avoid toper structure influence demoulding, set up left kicking block and right kicking block in the inside intermediate position of back mould benevolence, left kicking block and right kicking block laminating can form the slotted hole of die-casting conical face, when demoulding, left kicking block and right kicking block move to both sides along with the slider, break away from automobile rearview mirror milling machine pivot, can accomplish the demoulding, finished product after die-casting need not to pass again, direct integrated into one piece; two die-casting areas are arranged on the rear die core, so that two products can be die-cast at each time, and the die-casting efficiency is improved.

Preferably, a first through hole is formed in the rear die core, the first through hole is communicated with the die-casting cavity, the second ejector rod is arranged in the first through hole, and a gap between the first through hole and the second ejector rod is a discharge flow channel. The automobile rearview mirror rotating shaft is of a hollow structure, is formed through the first ejector rod and the second ejector rod, and redundant molten metal flows out of the material discharging flow channel during pouring, so that a hollow cylindrical waste material bag is finally formed, compared with an original large lump waste material, the thin hollow cylindrical waste material bag can reduce the waste of the molten metal, the difficulty in removing the waste material bag is reduced, and materials and trouble are saved.

Preferably, the opposite ends of the left top block and the right top block are respectively provided with a semi-cylindrical groove, and the two semi-cylindrical grooves are spliced to form a cylindrical slotted hole. The part with different diameters on the rotating shaft of the automobile rearview mirror is formed by die-casting a cylindrical slotted hole formed by splicing a left ejector block and a right ejector block, and the left ejector block and the right ejector block can be separated by sliding towards two sides, so that the demoulding is convenient.

Preferably, a first conical surface, an annular step surface, a second conical surface and a cylindrical surface are arranged on the inner side of the cylindrical slotted hole, the first conical surface is connected with the second conical surface through the annular step surface, and the second conical surface is connected with the cylindrical surface. The inner shape of the cylindrical slotted hole is matched with the rotating shaft of the automobile rearview mirror.

Preferably, sliding grooves for sliding of the sliding blocks are formed in two sides of the rear mold core, and guide pillars for driving the sliding blocks to move are fixed on the front mold frame and are obliquely arranged; the slider is provided with an inclined insertion hole for the guide pillar to pass through, the left ejector block and the right ejector block are respectively fixed on the sliders on two sides, and the guide pillar can drive the sliders to move back and forth along the sliding grooves to drive the end parts of the left ejector block and the right ejector block to be inserted into the die casting cavity or leave the die casting cavity. During demoulding, the front film frame drives the guide pillar to move outwards together, the guide pillar pushes the sliding blocks on the two sides to be separated mutually, and the left ejector block and the right ejector block leave the die-casting cavity, so that the automobile rearview mirror rotating shaft formed by die-casting is easily ejected by the ejector pin structure, and the demoulding rate is greatly improved.

Preferably, a sprue bush is arranged on the front film frame, a liquid inlet flow channel is arranged on the rear mold core, one end of the liquid inlet flow channel is communicated with the sprue bush, and the other end of the liquid inlet flow channel is divided into two paths which are respectively connected with the two die casting cavities. The molten metal flows in from the sprue bush, is divided into two paths through the liquid inlet flow channel and flows into the two die-casting cavities respectively, two products are die-cast at one time, and the die-casting efficiency is improved.

Compared with the prior art, the beneficial effects of the utility model are that: the rear die core is internally provided with an insertion hole, a movable left ejector block and a movable right ejector block are arranged in the insertion hole, a slotted hole formed by splicing the left ejector block and the right ejector block is utilized for die-casting a conical structure of the automobile rearview mirror rotating shaft, and the left ejector block and the right ejector block are driven by an inclined guide rod on the front die frame and can be separated from each other, so that stripping is facilitated; the first ejector rod and the second ejector rod are mutually abutted, so that a finished product is of a hollow structure, the diameter of the second ejector rod is smaller than that of the through hole of the rear die core, and a gap between the first ejector rod and the second ejector rod can contain redundant molten metal to form a hollow cylindrical waste bag, so that the material and trouble are saved.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is an internal structure view of the present invention;

FIG. 5 is a top view of the structure of FIG. 4;

FIG. 6 is a diagram showing the fitting state of the left top block and the right top block;

fig. 7 is a schematic structural view of a rotating shaft of the automobile rearview mirror.

Labeled in the figure as: the automobile rearview mirror film forming die comprises a front film frame 1, a front film core 11, a guide post 12, a limiting block 13, a second inclined surface 14, a first ejector rod 15, a second guide post 16, a rear film frame 2, a rear die core 21, a liquid inlet lug 22, a liquid inlet flow channel 23, a die-casting cavity 24, a left insertion hole 25, a right insertion hole 26, a second ejector rod 27, a first through hole 28, a discharging flow channel 29, a guide post sleeve 210, a sprue bush 3, a left ejector block 41, a right ejector block 42, a cylindrical groove hole 43, a sliding groove 51, a sliding block 52, an inclined insertion hole 53, a first inclined surface 54, an automobile rearview mirror rotating shaft 6, an annular surface 61, a first circumferential surface 62, a first conical structure 63, an annular step surface 64, a second conical structure 65, a second cylindrical surface 66, a third circumferential surface 67 and reinforcing ribs 68.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and as used in the description of the invention, the definition of "a plurality" or "a plurality" means two or more unless otherwise explicitly specified.

See the drawings. For convenience of description, the front-back direction of the molding die is set as the Z-axis direction, the left-right direction is set as the X-axis direction, and the up-down direction is set as the Y-axis direction.

This embodiment automobile rearview mirror pivot integrated into one piece mould, including preceding membrane frame 1 and back membrane frame 2, preceding membrane frame 1 and back membrane frame 2 set up in Z axle direction side by side. The front film frame 1 and the rear film frame 2 are provided with a front film core 11 and a rear film core 21 which are matched with each other, and the front film core 11 and the rear film core 21 form a cavity after being closed. The rear die core 21 is provided with two die-casting areas which are arranged in parallel in the Y-axis direction; the front film frame 1 is provided with a sprue bush 3, the rear mold core 21 is provided with a liquid inlet lug 22 and a liquid inlet flow channel 23, and when the front film frame 1 and the rear film frame 2 are assembled, the bottom of the sprue bush 3 is sleeved on the liquid inlet lug 21 and the front film frame 1 and the rear film frame 2 are tightly matched; one end of the liquid inlet flow channel 23 is communicated with the sprue bush 3, and the other end of the liquid inlet flow channel is divided into two paths which are respectively connected with two die casting cavities. The molten metal flows in from the sprue bush, is divided into two paths through the liquid inlet flow channel, and flows into the two die-casting cavities 24 respectively, so that two products are die-cast at one time, and the die-casting efficiency is improved.

A die-casting cavity 24 is arranged in the middle of each die-casting area of the rear die core 21 and is arranged in the Z-axis direction; the rear die core 21 is internally provided with a jack penetrating through the rear die core, the jack is arranged in the X-axis direction, and the jack is communicated with the die-casting cavity 24 and is divided into a left jack 25 and a right jack 26 by the die-casting cavity; each die-cast section is provided with a left top block 41 and a right top block 42 which are inserted into the left insertion hole 25 and the right insertion hole 26, respectively.

The opposite ends of the left top block 41 and the right top block 42 are respectively provided with a semi-cylindrical groove, and the two semi-cylindrical grooves are spliced to form a cylindrical slotted hole 43. The inner side of the cylindrical slotted hole 43 is provided with a first conical surface, an annular step surface, a second conical surface and a cylindrical surface, the first conical surface is connected with the second conical surface through the annular step surface, and the second conical surface is connected with the cylindrical surface. The inner shape of the cylindrical slotted hole is matched with the rotating shaft of the automobile rearview mirror.

The left side and the right side of each die-casting area are respectively provided with a sliding groove 51, the sliding grooves 51 are positioned on the rear film frame 2, and the sliding grooves 51 are arranged in the X-axis direction; a sliding block 52 in sliding fit with the sliding groove 51 is arranged in the sliding groove 51, a guide post 12 for driving the sliding block to move is fixed on the front film frame 1, and the guide post 12 is obliquely arranged; the slide block 52 is provided with an inclined insertion hole 53 for the guide column to pass through, the left ejector block 41 and the right ejector block 42 are respectively fixed on the slide blocks 52 at two sides, and the guide column 12 can drive the slide block 52 to move back and forth along the slide groove 51 to drive the end parts of the left ejector block and the right ejector block to be inserted into the die casting cavity or leave the die casting cavity. The side, away from the die-casting area, of the sliding block 52 is a first inclined surface 54, the limiting block 13 is arranged on the front film frame 1, the side, facing the rear mold core, of the limiting block 13 is a second inclined surface 14, when the front film frame 1 and the rear film frame 2 are closed, the first inclined surface 54 and the second inclined surface 14 are abutted to each other, and the limiting block 13 can prevent the sliding block 52 from moving outwards. During demoulding, the front film frame drives the guide pillar to move outwards together, the guide pillar pushes the sliding blocks on the two sides to be separated mutually, and the left ejector block and the right ejector block leave the die-casting cavity, so that the automobile rearview mirror rotating shaft formed by die-casting is easily ejected by the ejector pin structure, and the demoulding rate is greatly improved.

A first ejector rod 15 is arranged on the front membrane core 1, and the bottom of the first ejector rod 15 is inserted into the die-casting cavity 24; the rear die core 21 is internally provided with a second ejector rod 27, the top of the second ejector rod 27 is inserted into the die-casting cavity 24 and is mutually abutted against the bottom of the first ejector rod, and the first ejector rod 15, the second ejector rod 27 and the die-casting cavity 24 are coaxially arranged and are all arranged in the Z-axis direction. A first through hole 28 is arranged in the rear die core 21, and the end part of the first through hole is communicated with the die-casting cavity; the second push rod 27 passes through the first through hole 28 and is inserted into the die-casting cavity 24, and an annular gap between the first through hole 28 and the second push rod 27 is a discharge flow channel 29. Inside first ejector pin, the formation hollow structure of second ejector pin of passing through of automobile rearview mirror pivot, and the unnecessary molten metal when pouring flows from arranging the material runner, finally forms hollow cylindrical waste package, the waste of the molten metal that significantly reduces, and alleviates the degree of difficulty of getting rid of the waste package, not only economizes the material but also economizes trouble.

In order to avoid dislocation when the front film frame and the rear film frame are folded, guide post sleeves 210 are arranged at four ends of the rear film frame 2, second guide posts 16 are arranged at four ends of the front film frame 1 and are perpendicular to the front film frame, and when the front film frame and the rear film frame are folded, the second guide posts are inserted into the guide post sleeves to ensure that the front film kernels and the rear film kernels are closed into a complete cavity.

The automobile rearview mirror rotating shaft 6 die-cast in the embodiment is of a cylindrical structure as a whole, the upper end of the rotating shaft is provided with a convex annular surface 61, the lower end of the cylinder is sequentially provided with a first circumferential surface 62, a first conical structure 63, an annular step surface 64, a second conical structure 65, a second cylindrical surface 66 and a third circumferential surface 67, the third circumferential surface is provided with reinforcing ribs 68, and the diameter of the first circumferential surface is larger than that of the second circumferential surface. The first circumferential surface 62 is formed by the die-casting cavity 24, the first conical structure 63, the annular step surface 64, the second conical structure 65 and the second cylindrical surface 66 are formed by die-casting a cylindrical slot hole formed by splicing the left top block 41 and the right top block 42, and the third circumferential surface 67 is formed by the die-casting cavity.

During die casting, the front film frame 1 and the rear film frame 2 are folded, the front film core 11 and the rear mold core 21 form two die casting cavities, and meanwhile, the guide pillar 12 on the front film frame 1 pushes the slide blocks 52 on the two sides to be folded, so that the left ejector block 41 and the right ejector block 42 are spliced to form a cylindrical slotted hole; the mechanical arm pours molten metal into the sprue bush 3, and the liquid is divided into two paths through the liquid inlet flow channel 23 and respectively enters the two die-casting cavities 24.

After the die casting is finished, the front film frame 1 is driven by a machine and slowly separated from the rear film frame 2, so that the guide pillars 12 which are arranged obliquely are driven, the guide pillars 12 drive the sliding blocks 52 on the two sides to be separated from each other, and therefore the left top block 41 and the right top block 42 are separated and separated from the die casting cavity 24; and then the rear side of the rear film frame 2 is provided with an ejector pin mechanism, and the die-cast automobile rearview mirror rotating shaft is pushed out from the rear mold core through the ejector pin so as to fall into the material frame.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The automobile rearview mirror rotating shaft integrated forming die comprises a front film frame and a rear film frame, wherein a front film core and a rear mold core which are matched with each other are arranged on the front film frame and the rear film frame; the method is characterized in that: the rear die core is provided with two die-casting areas, a die-casting cavity is arranged in the middle of each die-casting area, a jack penetrating through the rear die core is arranged in the rear die core, and the jack is communicated with the die-casting cavities; each die-casting area is provided with a left top block and a right top block, and the left top block and the right top block are arranged in the jack; the left side and the right side of the rear die core are respectively provided with a movable sliding block, one end of each of the left ejector block and the right ejector block is fixed on the sliding block, and the other end of each of the left ejector block and the right ejector block extends into the die-casting cavity; the front die core is provided with a first ejector rod, the rear die core is provided with a second ejector rod, the first ejector rod and the second ejector rod are coaxially arranged with the die-casting cavity, and the end parts of the first ejector rod and the second ejector rod are inserted into the die-casting cavity and mutually abutted.

2. The automobile rearview mirror rotating shaft integrally forming die as claimed in claim 1, wherein: a first through hole is formed in the rear die core, the first through hole is communicated with the die-casting cavity, the second ejector rod is arranged in the first through hole, and a gap between the first through hole and the second ejector rod is a discharging flow channel.

3. The automobile rearview mirror rotating shaft integrally forming die as claimed in claim 1, wherein: the end parts of the left ejector block and the right ejector block which are oppositely arranged are respectively provided with a semi-cylindrical groove, and the two semi-cylindrical grooves are spliced to form a cylindrical slotted hole.

4. The automobile rearview mirror rotating shaft integrally forming die as claimed in claim 3, wherein: the inner side of the cylindrical slotted hole is provided with a first conical surface, an annular step surface, a second conical surface and a cylindrical surface, the first conical surface is connected with the second conical surface through the annular step surface, and the second conical surface is connected with the cylindrical surface.

5. The automobile rearview mirror rotating shaft integrally forming die as claimed in claim 1, wherein: the two sides of the rear die core are provided with chutes for the sliding of the sliding block, the front die frame is fixed with guide posts for driving the sliding block to move, and the guide posts are obliquely arranged; the slider is provided with an inclined insertion hole for the guide pillar to pass through, the left ejector block and the right ejector block are respectively fixed on the sliders on two sides, and the guide pillar can drive the sliders to move back and forth along the sliding grooves to drive the end parts of the left ejector block and the right ejector block to be inserted into the die casting cavity or leave the die casting cavity.

6. The automobile rearview mirror rotating shaft integrally forming die as claimed in claim 1, wherein: the front mold frame is provided with a sprue bush, the rear mold core is provided with a liquid inlet flow channel, one end of the liquid inlet flow channel is communicated with the sprue bush, and the other end of the liquid inlet flow channel is divided into two paths which are respectively connected with the two die casting cavities.

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